MozillaCacheView from NirSoft is a freeware utility that you can use to view the content of Mozilla Browser's cache folders (including Firefox, Netscape, Mozilla).

It provides a list of all the files in the browser cache, allowing you to extract any files you want. For each cache file, the following information is displayed: URL, Content type, File size, Last modified time, Last fetched time, Expiration time, Fetch count, Server name, and more.